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. Author manuscript; available in PMC: 2020 Jan 1.
Published in final edited form as: Int J Cardiol. 2018 Sep 5;274:232–236. doi: 10.1016/j.ijcard.2018.09.007

Figure 2: ROC curve analysis considering all HF and COPD patients.

Figure 2:

The ROC curve identified a cutoff for V̇E intercept of ≥2.64 L/min to indicate patients with a high probability of having COPD (AUC: 0.88; p<0.01).